git.delta.rocks / unique-network / refs/commits / 2999bc8acc0d

1// Copyright 2019-2022 Unique Network (Gibraltar) Ltd.2// This file is part of Unique Network.34// Unique Network is free software: you can redistribute it and/or modify5// it under the terms of the GNU General Public License as published by6// the Free Software Foundation, either version 3 of the License, or7// (at your option) any later version.89// Unique Network is distributed in the hope that it will be useful,10// but WITHOUT ANY WARRANTY; without even the implied warranty of11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the12// GNU General Public License for more details.1314// You should have received a copy of the GNU General Public License15// along with Unique Network. If not, see <http://www.gnu.org/licenses/>.1617#![recursion_limit = "1024"]18#![cfg_attr(not(feature = "std"), no_std)]19#![allow(20	clippy::too_many_arguments,21	clippy::unnecessary_mut_passed,22	clippy::unused_unit23)]2425extern crate alloc;2627use frame_support::{28	decl_module, decl_storage, decl_error, decl_event,29	dispatch::DispatchResult,30	ensure,31	weights::{Weight},32	transactional,33	pallet_prelude::{DispatchResultWithPostInfo, ConstU32},34	BoundedVec,35};36use scale_info::TypeInfo;37use frame_system::{self as system, ensure_signed};38use sp_runtime::{sp_std::prelude::Vec};39use up_data_structs::{40	MAX_COLLECTION_NAME_LENGTH, MAX_COLLECTION_DESCRIPTION_LENGTH, MAX_TOKEN_PREFIX_LENGTH,41	CreateItemData, CollectionLimits, CollectionPermissions, CollectionId, CollectionMode, TokenId,42	SponsorshipState, CreateCollectionData, CreateItemExData, budget, Property, PropertyKey,43	PropertyKeyPermission,44};45use pallet_evm::account::CrossAccountId;46use pallet_common::{47	CollectionHandle, Pallet as PalletCommon, CommonWeightInfo, dispatch::dispatch_call,48	dispatch::CollectionDispatch,49};50pub mod eth;5152#[cfg(feature = "runtime-benchmarks")]53mod benchmarking;54pub mod weights;55use weights::WeightInfo;5657const NESTING_BUDGET: u32 = 5;5859decl_error! {60	/// Error for non-fungible-token module.61	pub enum Error for Module<T: Config> {62		/// Decimal_points parameter must be lower than MAX_DECIMAL_POINTS constant, currently it is 30.63		CollectionDecimalPointLimitExceeded,64		/// This address is not set as sponsor, use setCollectionSponsor first.65		ConfirmUnsetSponsorFail,66		/// Length of items properties must be greater than 0.67		EmptyArgument,68	}69}7071pub trait Config: system::Config + pallet_common::Config + Sized + TypeInfo {72	type Event: From<Event<Self>> + Into<<Self as frame_system::Config>::Event>;7374	/// Weight information for extrinsics in this pallet.75	type WeightInfo: WeightInfo;76	type CommonWeightInfo: CommonWeightInfo<Self::CrossAccountId>;77}7879decl_event! {80	pub enum Event<T>81	where82		<T as frame_system::Config>::AccountId,83		<T as pallet_evm::account::Config>::CrossAccountId,84	{85		/// Collection sponsor was removed86		///87		/// # Arguments88		///89		/// * collection_id: Globally unique collection identifier.90		CollectionSponsorRemoved(CollectionId),9192		/// Collection admin was added93		///94		/// # Arguments95		///96		/// * collection_id: Globally unique collection identifier.97		///98		/// * admin:  Admin address.99		CollectionAdminAdded(CollectionId, CrossAccountId),100101		/// Collection owned was change102		///103		/// # Arguments104		///105		/// * collection_id: Globally unique collection identifier.106		///107		/// * owner:  New owner address.108		CollectionOwnedChanged(CollectionId, AccountId),109110		/// Collection sponsor was set111		///112		/// # Arguments113		///114		/// * collection_id: Globally unique collection identifier.115		///116		/// * owner:  New sponsor address.117		CollectionSponsorSet(CollectionId, AccountId),118119		/// New sponsor was confirm120		///121		/// # Arguments122		///123		/// * collection_id: Globally unique collection identifier.124		///125		/// * sponsor:  New sponsor address.126		SponsorshipConfirmed(CollectionId, AccountId),127128		/// Collection admin was removed129		///130		/// # Arguments131		///132		/// * collection_id: Globally unique collection identifier.133		///134		/// * admin:  Admin address.135		CollectionAdminRemoved(CollectionId, CrossAccountId),136137		/// Address was remove from allow list138		///139		/// # Arguments140		///141		/// * collection_id: Globally unique collection identifier.142		///143		/// * user:  Address.144		AllowListAddressRemoved(CollectionId, CrossAccountId),145146		/// Address was add to allow list147		///148		/// # Arguments149		///150		/// * collection_id: Globally unique collection identifier.151		///152		/// * user:  Address.153		AllowListAddressAdded(CollectionId, CrossAccountId),154155		/// Collection limits was set156		///157		/// # Arguments158		///159		/// * collection_id: Globally unique collection identifier.160		CollectionLimitSet(CollectionId),161162		CollectionPermissionSet(CollectionId),163	}164}165166type SelfWeightOf<T> = <T as Config>::WeightInfo;167168// # Used definitions169//170// ## User control levels171//172// chain-controlled - key is uncontrolled by user173//                    i.e autoincrementing index174//                    can use non-cryptographic hash175// real - key is controlled by user176//        but it is hard to generate enough colliding values, i.e owner of signed txs177//        can use non-cryptographic hash178// controlled - key is completly controlled by users179//              i.e maps with mutable keys180//              should use cryptographic hash181//182// ## User control level downgrade reasons183//184// ?1 - chain-controlled -> controlled185//      collections/tokens can be destroyed, resulting in massive holes186// ?2 - chain-controlled -> controlled187//      same as ?1, but can be only added, resulting in easier exploitation188// ?3 - real -> controlled189//      no confirmation required, so addresses can be easily generated190decl_storage! {191	trait Store for Module<T: Config> as Unique {192193		//#region Private members194		/// Used for migrations195		ChainVersion: u64;196		//#endregion197198		//#region Tokens transfer rate limit baskets199		/// (Collection id (controlled?2), who created (real))200		/// TODO: Off chain worker should remove from this map when collection gets removed201		pub CreateItemBasket get(fn create_item_basket): map hasher(blake2_128_concat) (CollectionId, T::AccountId) => Option<T::BlockNumber>;202		/// Collection id (controlled?2), token id (controlled?2)203		pub NftTransferBasket get(fn nft_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;204		/// Collection id (controlled?2), owning user (real)205		pub FungibleTransferBasket get(fn fungible_transfer_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;206		/// Collection id (controlled?2), token id (controlled?2)207		pub ReFungibleTransferBasket get(fn refungible_transfer_basket): nmap hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;208		//#endregion209210		/// Variable metadata sponsoring211		/// Collection id (controlled?2), token id (controlled?2)212		#[deprecated]213		pub VariableMetaDataBasket get(fn variable_meta_data_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;214		pub TokenPropertyBasket get(fn token_property_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;215216		/// Approval sponsoring217		pub NftApproveBasket get(fn nft_approve_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId => Option<T::BlockNumber>;218		pub FungibleApproveBasket get(fn fungible_approve_basket): double_map hasher(blake2_128_concat) CollectionId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;219		pub RefungibleApproveBasket get(fn refungible_approve_basket): nmap hasher(blake2_128_concat) CollectionId, hasher(blake2_128_concat) TokenId, hasher(twox_64_concat) T::AccountId => Option<T::BlockNumber>;220	}221}222223decl_module! {224	pub struct Module<T: Config> for enum Call225	where226		origin: T::Origin227	{228		type Error = Error<T>;229230		fn deposit_event() = default;231232		fn on_initialize(_now: T::BlockNumber) -> Weight {233			0234		}235236		fn on_runtime_upgrade() -> Weight {237			let limit = None;238239			<VariableMetaDataBasket<T>>::remove_all(limit);240241			0242		}243244		/// This method creates a Collection of NFTs. Each Token may have multiple properties encoded as an array of bytes of certain length. The initial owner of the collection is set to the address that signed the transaction and can be changed later.245		///246		/// # Permissions247		///248		/// * Anyone.249		///250		/// # Arguments251		///252		/// * collection_name: UTF-16 string with collection name (limit 64 characters), will be stored as zero-terminated.253		///254		/// * collection_description: UTF-16 string with collection description (limit 256 characters), will be stored as zero-terminated.255		///256		/// * token_prefix: UTF-8 string with token prefix.257		///258		/// * mode: [CollectionMode] collection type and type dependent data.259		// returns collection ID260		#[weight = <SelfWeightOf<T>>::create_collection()]261		#[transactional]262		#[deprecated]263		pub fn create_collection(origin,264								 collection_name: BoundedVec<u16, ConstU32<MAX_COLLECTION_NAME_LENGTH>>,265								 collection_description: BoundedVec<u16, ConstU32<MAX_COLLECTION_DESCRIPTION_LENGTH>>,266								 token_prefix: BoundedVec<u8, ConstU32<MAX_TOKEN_PREFIX_LENGTH>>,267								 mode: CollectionMode) -> DispatchResult  {268			let data: CreateCollectionData<T::AccountId> = CreateCollectionData {269				name: collection_name,270				description: collection_description,271				token_prefix,272				mode,273				..Default::default()274			};275			Self::create_collection_ex(origin, data)276		}277278		/// This method creates a collection279		///280		/// Prefer it to deprecated [`created_collection`] method281		#[weight = <SelfWeightOf<T>>::create_collection()]282		#[transactional]283		pub fn create_collection_ex(origin, data: CreateCollectionData<T::AccountId>) -> DispatchResult {284			let sender = ensure_signed(origin)?;285286			// =========287288			T::CollectionDispatch::create(T::CrossAccountId::from_sub(sender), data)?;289290			Ok(())291		}292293		/// **DANGEROUS**: Destroys collection and all NFTs within this collection. Users irrecoverably lose their assets and may lose real money.294		///295		/// # Permissions296		///297		/// * Collection Owner.298		///299		/// # Arguments300		///301		/// * collection_id: collection to destroy.302		#[weight = <SelfWeightOf<T>>::destroy_collection()]303		#[transactional]304		pub fn destroy_collection(origin, collection_id: CollectionId) -> DispatchResult {305			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);306			let collection = <CollectionHandle<T>>::try_get(collection_id)?;307			collection.check_is_mutable()?;308309			// =========310311			T::CollectionDispatch::destroy(sender, collection)?;312313			<NftTransferBasket<T>>::remove_prefix(collection_id, None);314			<FungibleTransferBasket<T>>::remove_prefix(collection_id, None);315			<ReFungibleTransferBasket<T>>::remove_prefix((collection_id,), None);316317			<NftApproveBasket<T>>::remove_prefix(collection_id, None);318			<FungibleApproveBasket<T>>::remove_prefix(collection_id, None);319			<RefungibleApproveBasket<T>>::remove_prefix((collection_id,), None);320321			Ok(())322		}323324		/// Add an address to allow list.325		///326		/// # Permissions327		///328		/// * Collection Owner329		/// * Collection Admin330		///331		/// # Arguments332		///333		/// * collection_id.334		///335		/// * address.336		#[weight = <SelfWeightOf<T>>::add_to_allow_list()]337		#[transactional]338		pub fn add_to_allow_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{339340			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);341			let collection = <CollectionHandle<T>>::try_get(collection_id)?;342343			<PalletCommon<T>>::toggle_allowlist(344				&collection,345				&sender,346				&address,347				true,348			)?;349350			Self::deposit_event(Event::<T>::AllowListAddressAdded(351				collection_id,352				address353			));354355			Ok(())356		}357358		/// Remove an address from allow list.359		///360		/// # Permissions361		///362		/// * Collection Owner363		/// * Collection Admin364		///365		/// # Arguments366		///367		/// * collection_id.368		///369		/// * address.370		#[weight = <SelfWeightOf<T>>::remove_from_allow_list()]371		#[transactional]372		pub fn remove_from_allow_list(origin, collection_id: CollectionId, address: T::CrossAccountId) -> DispatchResult{373374			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);375			let collection = <CollectionHandle<T>>::try_get(collection_id)?;376377			<PalletCommon<T>>::toggle_allowlist(378				&collection,379				&sender,380				&address,381				false,382			)?;383384			<Pallet<T>>::deposit_event(Event::<T>::AllowListAddressRemoved(385				collection_id,386				address387			));388389			Ok(())390		}391392		/// Change the owner of the collection.393		///394		/// # Permissions395		///396		/// * Collection Owner.397		///398		/// # Arguments399		///400		/// * collection_id.401		///402		/// * new_owner.403		#[weight = <SelfWeightOf<T>>::change_collection_owner()]404		#[transactional]405		pub fn change_collection_owner(origin, collection_id: CollectionId, new_owner: T::AccountId) -> DispatchResult {406407			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);408409			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;410			target_collection.check_is_mutable()?;411			target_collection.check_is_owner(&sender)?;412413			target_collection.owner = new_owner.clone();414			<Pallet<T>>::deposit_event(Event::<T>::CollectionOwnedChanged(415				collection_id,416				new_owner417			));418419			target_collection.save()420		}421422		/// Adds an admin of the Collection.423		/// NFT Collection can be controlled by multiple admin addresses (some which can also be servers, for example). Admins can issue and burn NFTs, as well as add and remove other admins, but cannot change NFT or Collection ownership.424		///425		/// # Permissions426		///427		/// * Collection Owner.428		/// * Collection Admin.429		///430		/// # Arguments431		///432		/// * collection_id: ID of the Collection to add admin for.433		///434		/// * new_admin_id: Address of new admin to add.435		#[weight = <SelfWeightOf<T>>::add_collection_admin()]436		#[transactional]437		pub fn add_collection_admin(origin, collection_id: CollectionId, new_admin_id: T::CrossAccountId) -> DispatchResult {438			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);439			let collection = <CollectionHandle<T>>::try_get(collection_id)?;440441			<Pallet<T>>::deposit_event(Event::<T>::CollectionAdminAdded(442				collection_id,443				new_admin_id.clone()444			));445446			<PalletCommon<T>>::toggle_admin(&collection, &sender, &new_admin_id, true)447		}448449		/// Remove admin address of the Collection. An admin address can remove itself. List of admins may become empty, in which case only Collection Owner will be able to add an Admin.450		///451		/// # Permissions452		///453		/// * Collection Owner.454		/// * Collection Admin.455		///456		/// # Arguments457		///458		/// * collection_id: ID of the Collection to remove admin for.459		///460		/// * account_id: Address of admin to remove.461		#[weight = <SelfWeightOf<T>>::remove_collection_admin()]462		#[transactional]463		pub fn remove_collection_admin(origin, collection_id: CollectionId, account_id: T::CrossAccountId) -> DispatchResult {464			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);465			let collection = <CollectionHandle<T>>::try_get(collection_id)?;466467			<Pallet<T>>::deposit_event(Event::<T>::CollectionAdminRemoved(468				collection_id,469				account_id.clone()470			));471472			<PalletCommon<T>>::toggle_admin(&collection, &sender, &account_id, false)473		}474475		/// # Permissions476		///477		/// * Collection Owner478		///479		/// # Arguments480		///481		/// * collection_id.482		///483		/// * new_sponsor.484		#[weight = <SelfWeightOf<T>>::set_collection_sponsor()]485		#[transactional]486		pub fn set_collection_sponsor(origin, collection_id: CollectionId, new_sponsor: T::AccountId) -> DispatchResult {487			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);488489			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;490			target_collection.check_is_owner(&sender)?;491492			target_collection.set_sponsor(new_sponsor.clone())?;493494			<Pallet<T>>::deposit_event(Event::<T>::CollectionSponsorSet(495				collection_id,496				new_sponsor497			));498499			target_collection.save()500		}501502		/// # Permissions503		///504		/// * Sponsor.505		///506		/// # Arguments507		///508		/// * collection_id.509		#[weight = <SelfWeightOf<T>>::confirm_sponsorship()]510		#[transactional]511		pub fn confirm_sponsorship(origin, collection_id: CollectionId) -> DispatchResult {512			let sender = ensure_signed(origin)?;513514			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;515			ensure!(516				target_collection.confirm_sponsorship(&sender)?,517				Error::<T>::ConfirmUnsetSponsorFail518			);519520			<Pallet<T>>::deposit_event(Event::<T>::SponsorshipConfirmed(521				collection_id,522				sender523			));524525			target_collection.save()526		}527528		/// Switch back to pay-per-own-transaction model.529		///530		/// # Permissions531		///532		/// * Collection owner.533		///534		/// # Arguments535		///536		/// * collection_id.537		#[weight = <SelfWeightOf<T>>::remove_collection_sponsor()]538		#[transactional]539		pub fn remove_collection_sponsor(origin, collection_id: CollectionId) -> DispatchResult {540			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);541542			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;543			target_collection.check_is_owner(&sender)?;544545			target_collection.sponsorship = SponsorshipState::Disabled;546547			<Pallet<T>>::deposit_event(Event::<T>::CollectionSponsorRemoved(548				collection_id549			));550			target_collection.save()551		}552553		/// This method creates a concrete instance of NFT Collection created with CreateCollection method.554		///555		/// # Permissions556		///557		/// * Collection Owner.558		/// * Collection Admin.559		/// * Anyone if560		///     * Allow List is enabled, and561		///     * Address is added to allow list, and562		///     * MintPermission is enabled (see SetMintPermission method)563		///564		/// # Arguments565		///566		/// * collection_id: ID of the collection.567		///568		/// * owner: Address, initial owner of the NFT.569		///570		/// * data: Token data to store on chain.571		#[weight = T::CommonWeightInfo::create_item()]572		#[transactional]573		pub fn create_item(origin, collection_id: CollectionId, owner: T::CrossAccountId, data: CreateItemData) -> DispatchResultWithPostInfo {574			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);575			let budget = budget::Value::new(NESTING_BUDGET);576577			dispatch_call::<T, _>(collection_id, |d| d.create_item(sender, owner, data, &budget))578		}579580		/// This method creates multiple items in a collection created with CreateCollection method.581		///582		/// # Permissions583		///584		/// * Collection Owner.585		/// * Collection Admin.586		/// * Anyone if587		///     * Allow List is enabled, and588		///     * Address is added to allow list, and589		///     * MintPermission is enabled (see SetMintPermission method)590		///591		/// # Arguments592		///593		/// * collection_id: ID of the collection.594		///595		/// * itemsData: Array items properties. Each property is an array of bytes itself, see [create_item].596		///597		/// * owner: Address, initial owner of the NFT.598		#[weight = T::CommonWeightInfo::create_multiple_items(&items_data)]599		#[transactional]600		pub fn create_multiple_items(origin, collection_id: CollectionId, owner: T::CrossAccountId, items_data: Vec<CreateItemData>) -> DispatchResultWithPostInfo {601			ensure!(!items_data.is_empty(), Error::<T>::EmptyArgument);602			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);603			let budget = budget::Value::new(NESTING_BUDGET);604605			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items(sender, owner, items_data, &budget))606		}607608		#[weight = T::CommonWeightInfo::set_collection_properties(properties.len() as u32)]609		#[transactional]610		pub fn set_collection_properties(611			origin,612			collection_id: CollectionId,613			properties: Vec<Property>614		) -> DispatchResultWithPostInfo {615			ensure!(!properties.is_empty(), Error::<T>::EmptyArgument);616617			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);618619			dispatch_call::<T, _>(collection_id, |d| d.set_collection_properties(sender, properties))620		}621622		#[weight = T::CommonWeightInfo::delete_collection_properties(property_keys.len() as u32)]623		#[transactional]624		pub fn delete_collection_properties(625			origin,626			collection_id: CollectionId,627			property_keys: Vec<PropertyKey>,628		) -> DispatchResultWithPostInfo {629			ensure!(!property_keys.is_empty(), Error::<T>::EmptyArgument);630631			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);632633			dispatch_call::<T, _>(collection_id, |d| d.delete_collection_properties(&sender, property_keys))634		}635636		#[weight = T::CommonWeightInfo::set_token_properties(properties.len() as u32)]637		#[transactional]638		pub fn set_token_properties(639			origin,640			collection_id: CollectionId,641			token_id: TokenId,642			properties: Vec<Property>643		) -> DispatchResultWithPostInfo {644			ensure!(!properties.is_empty(), Error::<T>::EmptyArgument);645646			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);647648			dispatch_call::<T, _>(collection_id, |d| d.set_token_properties(sender, token_id, properties))649		}650651		#[weight = T::CommonWeightInfo::delete_token_properties(property_keys.len() as u32)]652		#[transactional]653		pub fn delete_token_properties(654			origin,655			collection_id: CollectionId,656			token_id: TokenId,657			property_keys: Vec<PropertyKey>658		) -> DispatchResultWithPostInfo {659			ensure!(!property_keys.is_empty(), Error::<T>::EmptyArgument);660661			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);662663			dispatch_call::<T, _>(collection_id, |d| d.delete_token_properties(sender, token_id, property_keys))664		}665666		#[weight = T::CommonWeightInfo::set_property_permissions(property_permissions.len() as u32)]667		#[transactional]668		pub fn set_property_permissions(669			origin,670			collection_id: CollectionId,671			property_permissions: Vec<PropertyKeyPermission>,672		) -> DispatchResultWithPostInfo {673			ensure!(!property_permissions.is_empty(), Error::<T>::EmptyArgument);674675			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);676677			dispatch_call::<T, _>(collection_id, |d| d.set_property_permissions(&sender, property_permissions))678		}679680		#[weight = T::CommonWeightInfo::create_multiple_items_ex(&data)]681		#[transactional]682		pub fn create_multiple_items_ex(origin, collection_id: CollectionId, data: CreateItemExData<T::CrossAccountId>) -> DispatchResultWithPostInfo {683			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);684			let budget = budget::Value::new(NESTING_BUDGET);685686			dispatch_call::<T, _>(collection_id, |d| d.create_multiple_items_ex(sender, data, &budget))687		}688689		// TODO! transaction weight690691		/// Set transfers_enabled value for particular collection692		///693		/// # Permissions694		///695		/// * Collection Owner.696		///697		/// # Arguments698		///699		/// * collection_id: ID of the collection.700		///701		/// * value: New flag value.702		#[weight = <SelfWeightOf<T>>::set_transfers_enabled_flag()]703		#[transactional]704		pub fn set_transfers_enabled_flag(origin, collection_id: CollectionId, value: bool) -> DispatchResult {705			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);706			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;707			target_collection.check_is_owner(&sender)?;708709			// =========710711			target_collection.limits.transfers_enabled = Some(value);712			target_collection.save()713		}714715		/// Destroys a concrete instance of NFT.716		///717		/// # Permissions718		///719		/// * Collection Owner.720		/// * Collection Admin.721		/// * Current NFT Owner.722		///723		/// # Arguments724		///725		/// * collection_id: ID of the collection.726		///727		/// * item_id: ID of NFT to burn.728		#[weight = T::CommonWeightInfo::burn_item()]729		#[transactional]730		pub fn burn_item(origin, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {731			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);732733			let post_info = dispatch_call::<T, _>(collection_id, |d| d.burn_item(sender, item_id, value))?;734			if value == 1 {735				<NftTransferBasket<T>>::remove(collection_id, item_id);736				<NftApproveBasket<T>>::remove(collection_id, item_id);737			}738			// Those maps should be cleared only if token disappears completly, need to move this part of logic to pallets?739			// <FungibleApproveBasket<T>>::remove(collection_id, sender.as_sub());740			// <RefungibleApproveBasket<T>>::remove((collection_id, item_id, sender.as_sub()));741			Ok(post_info)742		}743744		/// Destroys a concrete instance of NFT on behalf of the owner745		/// See also: [`approve`]746		///747		/// # Permissions748		///749		/// * Collection Owner.750		/// * Collection Admin.751		/// * Current NFT Owner.752		///753		/// # Arguments754		///755		/// * collection_id: ID of the collection.756		///757		/// * item_id: ID of NFT to burn.758		///759		/// * from: owner of item760		#[weight = T::CommonWeightInfo::burn_from()]761		#[transactional]762		pub fn burn_from(origin, collection_id: CollectionId, from: T::CrossAccountId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {763			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);764			let budget = budget::Value::new(NESTING_BUDGET);765766			dispatch_call::<T, _>(collection_id, |d| d.burn_from(sender, from, item_id, value, &budget))767		}768769		/// Change ownership of the token.770		///771		/// # Permissions772		///773		/// * Collection Owner774		/// * Collection Admin775		/// * Current NFT owner776		///777		/// # Arguments778		///779		/// * recipient: Address of token recipient.780		///781		/// * collection_id.782		///783		/// * item_id: ID of the item784		///     * Non-Fungible Mode: Required.785		///     * Fungible Mode: Ignored.786		///     * Re-Fungible Mode: Required.787		///788		/// * value: Amount to transfer.789		///     * Non-Fungible Mode: Ignored790		///     * Fungible Mode: Must specify transferred amount791		///     * Re-Fungible Mode: Must specify transferred portion (between 0 and 1)792		#[weight = T::CommonWeightInfo::transfer()]793		#[transactional]794		pub fn transfer(origin, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128) -> DispatchResultWithPostInfo {795			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);796			let budget = budget::Value::new(NESTING_BUDGET);797798			dispatch_call::<T, _>(collection_id, |d| d.transfer(sender, recipient, item_id, value, &budget))799		}800801		/// Set, change, or remove approved address to transfer the ownership of the NFT.802		///803		/// # Permissions804		///805		/// * Collection Owner806		/// * Collection Admin807		/// * Current NFT owner808		///809		/// # Arguments810		///811		/// * approved: Address that is approved to transfer this NFT or zero (if needed to remove approval).812		///813		/// * collection_id.814		///815		/// * item_id: ID of the item.816		#[weight = T::CommonWeightInfo::approve()]817		#[transactional]818		pub fn approve(origin, spender: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, amount: u128) -> DispatchResultWithPostInfo {819			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);820821			dispatch_call::<T, _>(collection_id, |d| d.approve(sender, spender, item_id, amount))822		}823824		/// Change ownership of a NFT on behalf of the owner. See Approve method for additional information. After this method executes, the approval is removed so that the approved address will not be able to transfer this NFT again from this owner.825		///826		/// # Permissions827		/// * Collection Owner828		/// * Collection Admin829		/// * Current NFT owner830		/// * Address approved by current NFT owner831		///832		/// # Arguments833		///834		/// * from: Address that owns token.835		///836		/// * recipient: Address of token recipient.837		///838		/// * collection_id.839		///840		/// * item_id: ID of the item.841		///842		/// * value: Amount to transfer.843		#[weight = T::CommonWeightInfo::transfer_from()]844		#[transactional]845		pub fn transfer_from(origin, from: T::CrossAccountId, recipient: T::CrossAccountId, collection_id: CollectionId, item_id: TokenId, value: u128 ) -> DispatchResultWithPostInfo {846			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);847			let budget = budget::Value::new(NESTING_BUDGET);848849			dispatch_call::<T, _>(collection_id, |d| d.transfer_from(sender, from, recipient, item_id, value, &budget))850		}851852		#[weight = <SelfWeightOf<T>>::set_collection_limits()]853		#[transactional]854		pub fn set_collection_limits(855			origin,856			collection_id: CollectionId,857			new_limit: CollectionLimits,858		) -> DispatchResult {859			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);860			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;861			target_collection.check_is_owner(&sender)?;862			let old_limit = &target_collection.limits;863864			target_collection.limits = <PalletCommon<T>>::clamp_limits(target_collection.mode.clone(), &old_limit, new_limit)?;865866			<Pallet<T>>::deposit_event(Event::<T>::CollectionLimitSet(867				collection_id868			));869870			target_collection.save()871		}872873		#[weight = <SelfWeightOf<T>>::set_collection_limits()]874		#[transactional]875		pub fn set_collection_permissions(876			origin,877			collection_id: CollectionId,878			new_limit: CollectionPermissions,879		) -> DispatchResult {880			let sender = T::CrossAccountId::from_sub(ensure_signed(origin)?);881			let mut target_collection = <CollectionHandle<T>>::try_get(collection_id)?;882			target_collection.check_is_owner(&sender)?;883			let old_limit = &target_collection.permissions;884885			target_collection.permissions = <PalletCommon<T>>::clamp_permissions(target_collection.mode.clone(), &old_limit, new_limit)?;886887			<Pallet<T>>::deposit_event(Event::<T>::CollectionPermissionSet(888				collection_id889			));890891			target_collection.save()892		}893	}894}